EVENTS & PRESENTATIONS

INVESTOR RELATIONS

NEWS RELEASE

UPDATE: Mannatech Declares Third Quarter 2018 Dividend

FLOWER MOUND, Texas--(BUSINESS WIRE)--Dec. 4, 2018--
Mannatech,
Incorporated(NASDAQ: MTEX),
a global health and wellness company committed to transforming lives to
make a better world, announced that its Board of Directors declared a
cash dividend of $0.50 per share of common stock, payable on Thursday,
December 27, 2018, to shareholders of record at the close of business on
Friday, December 7, 2018. The dividend reflects a commitment to
rewarding shareholders and encouraging long-term investment in
Mannatech’s common stock.

The previously reported record date of December 6, 2018 was revised due
to all U.S. Markets being closed on Wednesday, December 5, 2018 for a
national day of mourning in honor of the late President George H.W.
Bush. As a result, the previously declared shareholder of record date of
December 6, 2018 has been revised to December 7, 2018.

Alfredo “Al” Bala, President and CEO of Mannatech, said, “The company’s
financial position supports a dividend and represents our belief in the
quality of our products, strength of our sales force, and the future of
our company. Mannatech continues its commitment to returning value to
our shareholders.”

About Mannatech

Mannatech, Incorporated is committed to transforming lives through the
development of high quality integrated health, weight management,
fitness and skin care products distributed through its global network of
independent associates and members. The company has been operating for
more than 20 years with operations in 26 markets^. For more information,
visit Mannatech.com.

^ Mannatech operates in China under a cross-border e-commerce platform
that is separate from its network marketing model.

Please Note: This release contains “forward-looking statements”
within the meaning of Section 27A of the Securities Act of 1933, as
amended, Section 21E of the Securities Exchange Act of 1934, as amended,
and the Private Securities Litigation Reform Act of 1995. These
forward-looking statements generally can be identified by use of phrases
or terminology such as “may,” “will,” “should,” “hope,” “could,”
“would,” “expects,” “plans,” “intends,” “anticipates,” “believes,”
“estimates,” “approximates,” “predicts,” “projects,” “potential,” and
“continues” or other similar words or the negative of such terminology.
Similarly, descriptions of Mannatech’s objectives, strategies, plans,
goals or targets contained herein are also considered forward-looking
statements. Mannatech believes this release should be read in
conjunction with all of its filings with the United States Securities
and Exchange Commission and cautions its readers that these
forward-looking statements are subject to certain events, risks,
uncertainties, and other factors. Some of these factors include, among
others, Mannatech’s inability to attract and retain associates and
members, increases in competition, litigation, regulatory changes, and
its planned growth into new international markets. Although Mannatech
believes that the expectations, statements, and assumptions reflected in
these forward-looking statements are reasonable, it cautions readers to
always consider all of the risk factors and any other cautionary
statements carefully in evaluating each forward-looking statement in
this release, as well as those set forth in its latest Annual Report on
Form 10-K, and other filings filed with the United States Securities and
Exchange Commission, including its current reports on Form 8-K. All of
the forward-looking statements contained herein speak only as of the
date of this release.